如何增加 MDCTextInputControllerOutlinedTextArea 的高度

I have assigned a class named MDCMultilineTextField for Uiview from the storyboard. This class is used for Multiline TextView. My Uiview height is 400(not fix) but my UiView border is not same as height, Please verify my code and you can see screenshot below.

        import MaterialComponents    

        @IBOutlet var viewTextView: MDCMultilineTextField!
        @IBOutlet var btnDone: UIButton!
        var notes=""
        var dismissView: ((_ text:String) -> Void)?
        var desc: MDCTextInputControllerOutlinedTextArea?
       override func viewDidLoad()
        {
           desc = MDCTextInputControllerOutlinedTextArea(textInput: viewTextView)
           viewTextView.placeholder="Description"
           viewTextView.backgroundColor = UIColor.yellow
           if notes != ""
            {
                textView.text = notes
                viewTextView.text = notes
            }
    }

我使用过 MDCOutlinedTextArea 并遇到了同样的问题。指定文本区域高度的唯一方法是设置最小和最大行数。 您需要计算可以在视图中显示的文本行数，如下所示。

    inpOutlineTextArea.textView.text = "Description"

    let lineHeight =  inpOutlineTextArea.textView.font!.lineHeight  // height for one line in textview
    let totalVisibleRows = yourView.frame.height / lineHeight   // number of rows that can be shown in your view
    print("lines -- \(totalVisibleRows)")

    inpOutlineTextArea.maximumNumberOfVisibleRows = totalVisibleRows
    inpOutlineTextArea.minimumNumberOfVisibleRows = totalVisibleRows